Valve construction for pumps.



N0. 851,182. PATENTED APR. 23, 1907.

J. ROWBOTHAM. VALVE CONSTRUCTION FOR PUMPS.-

APPLIOATION FILED JAN.12,1906.

. lA/VE/VTOH A TTOfPNE).

WITNESSES:

rirurnn isrArns PATENT enrich.

JQHN ROWBOTHAM,-'OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR To JAMES BOYD, or rmvnnroan, PENNSYLVANIA.

VALVE-CQNSTRUCTIION FOR PUMPS.

"Specification of Letters Patent. llpplicatldn filed January 12,1906. Serial Ho. 295.758-

Patented. April 23, 1907.

To all. whom zlt may concern:

Be it known that LJoHN ROWBOTH M, a citizen of the United States, residing in the city of Philadelphia, county-of Philadelphia,

State of Pennsylvania, have invented cer.

'tain new and useful Improvements in Valve Construction for Pumps, of which the following is a-specification.

This invention relates to a valve for pumps of theconstruction flin which the. valve is adapted to be lifted from its seat by the actionof the water or other fluid against its inner side, the said valve being returned, by

suitable means, to itsseat from which it was lifted by the action of the fluid,

The object of my invention is to provide means whereby when the valve islifted'i'rom its seat it is given a slight rotation so that it will return to its seat in a .slightly different position from that which it occupied before having. been lifted therefrom, and at the 7 same time materially reducing the component of the force of the water striking against 5 the valve, whichis exerted transversely of the lane of the valve.

' Tie purpose of rotating -or shiftingthe valve in this manner is to cause all'portions of the under or seat surface of the same to come into contact with the seat so that one portion thereof willnot be more greatly worn than another.

The purpose ofjmaterially reducing the component of the force of the water or other fluid against the said valve as it escapes through the valve mechanism is to decrease the number of breakages of the supports for the valves.

A further object of my inventionis to pro vide, means for facilitating the rotation of thevalve and the'mean's by which'the valve is held upon or against its seat.

- The objects andpurpo'sesfor which the invention is designed are effected by causing the travel of the water or other fluid through the openings or assageways provided in the valve seat'in suc directions that it will strike the valve at an acute angle, the result being that a certain component of the force of the escaping water occasions lifting of the valve,

while a certain other component of'suc force occasions the rotation or shifting of the valve; The relative proportions of these two components of the force of the escaping 1 water orfluid are dependent'upon the angle at which the said water or fluid strikes the valve asit escapes.

My invention-resides in the combination and arrangement or the parts as hereinafter described, specifically pointed-out in the claims, and as illustrated in the accompanying drawings forming apart of this specification, and in which,

Figure ,1 is a central vertical section'or" a valve and its seat taken along the line 1-1 of Figure 2.;

Figure 2 1s a top' lan view of the valve seat, a portion thereo being broken away;

Figure 3 is a sectional view showing the curved or bent deflecting 'lates or ribs, the upper edge of each of which overlaps-the lower edge of an adjacent plate or rib; and

' Figure 4 is avsimilar view showing curved or bent deflecting plates or ribs which d0 not overlap. I

The valve seat consists of what may be termed a hub 1, a ring 2, and deflecting plates or ribs 3 connecting the hub and ring,

as is clearly indicated in Figure 2 of the drawings. plane. of the valve seat and are curved or bent, as isclearly shownin Figures 1 aiid3 of the drawings. It is to be understood that any construction in which one or more por- The ribs 3 are inclined to the 8o tions of the respective plates or --ribs are angularly related to another portion or to other portions thereof, whereby eachof the said plates or ribs is concavo-convex in cross-section,.is within the scope of my-in-.

vention.

By inclining and curving the deflecting ribsin. the manner shown in Figures 1, 2 and upper edge ortions ofthe deflecting plates or ribs para el with the plane of the valve or the angularity may be made greater than is shown without departing from my invention.

It will be observed upon examination of Figures 2 and; 3, that the upper edge of each plate or rib..overlies. or overlaps the lower edge portion of an adjacent plate or rib.

The object of overlapping the plates or ribs in this manner is to prevent the passage of any portion of the water or fluid through the the case in the construction shown in Fi -1 to 3, inclusive, all of the said objectionable features areovercome,

washer 16 is I the. dotted lines 5 passes in vertical or direct line through the said valve mechanism and thus renders the verticalcomponent of the force greater than is necessary and also tends to prevent the rotation of the valve-upon its seat. It will be understood that the upper edgesof the ribs 6 shown in Figure 4 may be extended to different points and that with each extension 'a certain proportion of the objections noted is overcome, until finally when the u per edge of, each rib reaches a point directl y above or slightly beyond, as is gar-es the ..ver tical component of the force being reduced to a mini- -mum, and the rotation of the valve occa- I sioned by the discharge of the water through as the valve mechanism. I

The hub 1 is provided with a screwthreaded perforation 10 which is adapted to rece ve a screw-threaded end ofa projecting.

bolt 11;, the u fper end of which is. provided with a screw-threaded portion which is adapted to receive a nut '12 fora purpose to be hereinafterstated. i v g The valve 4, which consists of rubber or other suitable material, is provided with a central perforation 13 through which the bolt 11 is adapted to pass. 15 designates a coiled Wire spring which surround the projecting bolt. 11. The lower end ofthe said spring is seated or rests u on a washer 16 provided with a seat or the said spring. I The rovidedwith a perforation 18 through whicli the projecting bolt 11 passes. The upper end of the spring 15 presses against one side of a washer 20, loosely and-rotatively mounted upon the projecting bolt 11.

7 order to facilitate the rotation of the valve 4,

spring 15, and washer 2 0, I have provided a roller or ball bearing mechanism which is 10- l cated between the washer Y20 and the nut 12.

The bearing mechanism consists'of a-plate21i having a central perforation or opening 22 therein, throu h which the projecting bolt 11 passes. T e said plate 21 i s provided with a plurality of. openings 23- at points in:

termediate its outer circumference and the -said central perforation 22.

24 designates rollers mounted in these openings, the diameters of which rollers are greater than the thickness of the plate 21. It will thus be seen that, the Washer 20 and the nut 12 are in contact with the rollers andnot in contact with the plate 21, with the result that the force or pressure necessary to occasion rotation of the valve 4 and spring 15..

is greatly decreased.

1 Only two of the openings 23 and rollers24 are shown, but .it will be understood that there should be at least one more;opening and roller be rovided as are found tobe practicable an desirable. .It will be understood, of

course, that ball bearings may be substituted for the roller bearings shown.

,direction of travel of the water or other fluid as it passes between the deflecting ribs-3 of the-valve seat. 1

claim:. 7

1. In a valve construction, the combination of a valve and a seat, the said seat comprising-deflecting plates or ribs which are provided. and as many more may- In Figures 1 and 3, the arrows indicate the I l g thusdescribed my. invention, I

curvilinear, in transverse section, whereby the inclination'of the deflecting plates toward a horizontal plane 'may be increased at and hear the point ofdischarge from the said' valve construction.

2. In a valve construction, the combination .ofa valve anda seat, the said seat'comprising deflecting plates or ribs which are co'ncavo-convex in transverse section.

3. In avalve construction, the combination ofa valve and-a valve seat, the said seat comprising a'hub, a ring),

and deflecting ribs connecting the said hu and ring, the said ribs beinginclinedtothe plane of the said seat and eing curvilinear in transverse section.

4. As an article of manufacture, avalve seat which comprises deflecting plates or. ribs which are concavo-convex in transverse section. 5. As an article of manufacture, a valve seat which comprises defiectingplates or ribs which are concav'o-conv'exin transverse section, and the'upper edge of each ofthe said deflecting plates. or ribs over1appin'gthe .logver edge of an'adjacent deflecting plate. or

6. In a valve construction, the'combination of a valve and a seat, thesaid seat comprising deflecting plates: or ribs which are curvil near in transverse section, and one of the edges of each of which plates or ribs overlies one ofthe edges of an adjacent plate or rib. v I

7. in a valve construction, the combination of a rotatable valve and a valve seat, the

- convex in cross-section, whereby the water i said seat comprising deflecting ribs which are a roller bearing mechanism secured at the I 5 concave-convex in cross-section, means for outer-end of the said rojecting bolt, anda pressing the said valve against the valve seat, coiled spring surroun ing the said. bolt and and means-for facilitating the rotation of the, located intermediate the said valve and the said valve. said roller bearing mechanism and pressing 8. Ina valve construction, in combination, against the roller bearing mechanism and a rotatable valve, a valve seat provided with against the said valve. deflecting ribs or plates which are ooncavo- In testimony that I claim the foregoing a my invention, I have hereunto signed my name, this 10th day of January A. D. 1906.

I 'e I JOHN ROWBOTHAM.

In the presence of LAURA KLEINFELDER," I HARRY .F. AMBLER;

or other fluid passing through the said valve seat between the sand plates or r'ibs strikes the said valve at an acute angle,-a projecting bolt secured to the said valve seat and upon which the said valve is rotatable supported, 

